The couple are rumoured to have tied the knot a low-key ceremony in Santa Barbara.

The actress and singer split for five months last year but reunited and Natasha proudly showed off a diamond engagement ring in June.

Darius, 30, who plays stepdad to Natasha's two sons, had put their break-up down to the pressures of maintaining a long distance relationship.

While 36-year-old Natasha, a Canadian-born actress known for her role in sci-fi film Species, preferred to stay in Los Angeles, he was starring in London West End productions including Chicago, Gone With The Wind and Guys and Dolls.

Put a ring on it: The couple have been in an on-off relationship for five years, splitting for five months last year but reuniting and getting engaged

He appeared in the opera Carmen in London’s O2 arena after winning reality show From Popstar to Operastar.

Darius spoke to the Scottish Daily Record about the split back last year. He said: 'We were in love and enjoyed a wonderful engagement.

‘But for Natasha to move forward with her life, she needed to stay in Los Angeles and I had to come home to Scotland to work in the UK.

‘It was clear our romantic relationship was a success but that it was difficult because it was an epic long-distance one.

He added: 'I was doing Chicago and would fly from London at 1am on a Sunday morning, arriving in Los Angeles at 4pm that afternoon then having five or six hours with Natasha before getting on the Sunday night flight to be back for my Monday night performance.'

Far away: The couple have endured a long distance relationship with the mother-of-two based in Los Angeles and Darius spending a lot of time on stage in London

Darius recently swapped his name, saying he wanted to honour his Scottish side.